| 摘要 |
PCT No. PCT/JP90/01385 Sec. 371 Date Sep. 16, 1993 Sec. 102(e) Date Sep. 16, 1993 PCT Filed Oct. 26, 1990 PCT Pub. No. WO92/07673 PCT Pub. Date May 14, 1992.The mold release material for die castings is such one that an emulsion based on animal or vegetable oils, mineral oil, fatty acid and esters thereof is added an alkali metal or alkali earth metal salt of EDTA in the range 10-10,000 ppm. The alkali metal or alkali earth metal salt of EDTA prevents the aqueous solution of emulsion of the mold release material of the invention from micell formation, forms a stable emulsion, is scarcely affected by temperature, and forms bivalent metal ion and water soluble complex whereby it does not form deposits even if hard water is used as diluted water of the mold release material.
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